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Mostrando ítems 1236-1255 de 2105
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Evaluating an automated procedure of machine learning parameter tuning for software effort estimation
(2021-08-10)Software effort estimation requires accurate prediction models. Machine learning algorithms have been used to create more accurate estimation models. However, these algorithms are sensitive to factors such as the choice ... -
Evaluating the Nao Robot in the Role of Personal Assistant: The Effect of Gender in Robot Performance Evaluation
(2019-11-20)By using techniques such as the Wizard of Oz (WoZ) and video capture, this paper evaluated the performance of the Nao Robot in the role of a personal assistant, which was valuated alongside the impact of the assigned gender ... -
Evaluating Virtual and Local Pepper Presence in the Role of Communicator Interacting with Another Human Presenter at a Vocational Fair of Computer Sciences
(2022-06-16)This paper proposes the evaluation of the local and remote interaction of a Pepper Robot and a human presenter answering questions from high-school students at the Universidad de Costa Rica’s vocational fair. The interactions ... -
Evaluation of Debris Flows for Flood Plain Estimation in a Small Ungauged Tropical Watershed for Hurricane Otto
(2021-08-18)The variability of climate, increase in population, and lack of territorial plans in Costa Rica have caused intense disasters with human and economic losses. In 2016, Hurricane Otto hit the country’s northern area, leaving ... -
Evaluation of denoising algorithms for footsteps sound classification in noisy environments
(2021)Identifying a person using footsteps sounds is part of the recent research in developing biometrics, systems designed to identify an individual in a group using body measurements. The sound of footsteps has a short ... -
Evaluation of Mixed Deep Neural Networks for Reverberant Speech Enhancement
(2020)Speech signals are degraded in real-life environments, as a product of background noise or other factors. The processing of such signals for voice recognition and voice analysis systems presents important challenges. One ... -
Evaluation of potential features present in short texts in spanish in order to classify them by polarity
(2016)This work describes the identification and evaluation process of potential text markers for sentiment analysis. The evaluation of the markers and their use as part of the feature extraction process from ... -
Evaluation of potential Spanish text markers on social posts asfeatures for polarity classification
(2017)This work describes the identification and evaluation process of potential text markers for sen-timent analysis. Evaluation of the markers and its use as part of the feature extraction processfrom plain text that is needed ... -
Evolution of microcontroller’s course under the influence of arduino
(2016)This paper presents the evolution of an undergraduate microcontroller’s course that uses Arduino as its main platform. In earlier versions of the course, it focused on teaching Arduino’s framework and its interconnection ... -
Exhibir lo tropical: imágenes en la VIII Bienal Internacional Estudiantil de Costa Rica
(2022)En 1992, el Colegio de Arquitectos de Costa Rica organizó la primera bienal de arquitectura para profesionales en el país y, desde 2004 se desarrollan las bienales estudiantiles de forma paralela. A partir de un análisis ... -
Experiencia de Planificación dentro de la Reserva Forestal Golfo Dulce
(2012)Forestal Golfo Dulce inició en el 2006 un proceso de planificación que culminó con un Plan de manejo, dicho plan contempla lineamientos generales de funcionamiento, sin embargo, debido al proceso de ordenamiento catastral ... -
Experiencias en la implementación de feedback en juegos serios con objetos activos en actividades educativas basadas en IT
(2023-07)Este trabajo presenta la experiencia del desarrollo de un proyecto de investigación orientado a trabajar con juegos serios basados en IT con objetos activos y analizar el impacto de la integración del feedback sobre estos ... -
Experimental study of the development flow region on stepped chutes
(2006)The development flow region of stepped chutes was studied experimentally. Three configuration of chute bed slopes 3.5H:1V, 5H:1V, and 10H:1V were used to study the flow characteristics. Each model had five horizontal steps ... -
Experimental study on transfer learning in denoising autoencoders for speech enhancement
(2020)The quality of speech signals is affected by a combination of background noise, reverberation, and other distortions in real-life environments. The processing of such signals presents important challenges for tasks such ... -
Explorando los efectos del COVID-19 en los precios de propiedades y alquileres urbanos de la GAM
(2021-08)¿Han bajado los precios de venta y alquiler de bienes inmuebles en la GAM desde el inicio de la pandemia? La pandemia claramente ha introducido incertidumbre entre los agentes urbanos, modificando las interacciones entre ... -
Exploratory Analysis of Research Publications on Robotics in Costa Rica Main Public Universities
(2021)The article presents the main robotic trends linked to the publications of the institutional repositories of the five main Costa Rican public universities: Tecnológico de Costa Rica, University of Costa Rica, National ... -
Exploring the boundaries of Solar Home Systems (SHS) for off-grid electrification: Optimal SHS sizing for the multi-tier framework for household electricity access
(2019-04-15)With almost 1.1 billion people lacking access to electricity, solar-based off-grid products like Solar Home Systems (SHS) have become a promising solution to provide basic electricity needs in un(der)-electrified regions. ... -
Extracción de fenol de aguas de residuo utilizando aceite de canola como disolvente orgánico en un proceso de membrana líquida
(2019)Se estudió la extracción de fenol de una disolución simulada utilizando una emulsión de membrana líquida (EML) y un diseño factorial para encontrar las mejores condiciones de operación. Se usó span 80 como surfactante, ...